NEMA A600/P600 1

[jacphi]

what does NEMA A600/P600 stands for in Contactor rating.

 

[jbartos]

Suggestion: NEMA/UL A600/P600 characterizes a contact maximum VA rating for closing duty and opening duty for a specific load.
Visit

http://www.bussmann.com/library/bifs/1120.PDF

http://www.automationtechies.com/store/pid686.php

http://www.ab.com/industrialcontrols/products/pdfs/relays_timers/700s-p.pdf

http://ecatalog.squared.com/catalog/html/sections/21/17221022.htm

http://www.squared.com/us/products/...e9e3d85256999006bd856/$FILE/9001CT0001_13.pdf

(page 219)
etc. for more info

 

[jacphi]

how is this rating used in the case of indicating lights in motor control centres i.e is it applicable for indicating lights.

 

[jbartos]

Suggestion: The indicating lights are essentially resistive loads. Therefore, the contact may be loaded relatively high with the current, the contact make and break VAs will be almost equal to Watts, and some design margin is advisable, e.g. 10 to 15% to account for the manufacturing contact tolerances or inaccuracy.